require 'subj_models/concerns/comprising_external_id'

module SubjModels

  module NomenclatureAttributeModule

    def self.included(including_class)

      including_class.class_eval do

        include SubjModels::ComprisingExternalId

        has_many :attribute_values, dependent: :destroy

        validates :name, presence: true

      end

    end

    def to_s
      name
    end

  end

end